AirDrop - old MACs?

I have a 13 "MacAir, end of 2010. iMac 20-inch, mid 2007 the two OS 10.10.5.

They are both on the same wireless network.

When I run AirDrop on two iMac computers see the MacAir, but the iMac does not see the MacAir.

I do not see the "See who you are to the search?" or "Allow me to be discovered by everyone"?

Any thoughts on how to use AirDrop?

Your iMac is too old to support this feature.

Tags: Mac OS & System Software

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